ขันแก้ว จุฬารัตน์. “Digital Marketing Strategy and Marketing Performance Evidence from Service Businesses in Thailand”. Creative Business and Sustainability Journal 41, no. 1 (March 22, 2019): 1–32. accessed October 15, 2026. https://so01.tci-thaijo.org/index.php/CBSReview/article/view/179640.